Click on thumbnails for a larger image. Please be patient since some of these pages of thumbnail images take some time to load. These mineral photos are copyrighted by their owners and may not be used without permission.
Quintinite-2H: Mg4Al2(OH)12CO3·4(H2O) Quintinite-3T: Mg4Al2(OH)12CO3·4(H2O)
Comments: Pale brownish crystals of quintinite, 2H or 2T polytype unknown. Location: Jacupiranga Mine, São Paulo, Southeast Region, Brazil. Scale: Picture size 7 mm. © Thomas Witzke / Abraxas-Verlag